Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWB vs VUG: how they differ
IWB and VUG hold 54% of their weight in the same names, and IWB returned more over the year.
iShares Russell 1000 ETF and Vanguard Growth Index Fund.
What they hold in common
By the books each fund has filed, IWB and VUG hold 54% of their money in the same securities at the same weight.
| Holding | IWB | VUG |
|---|---|---|
| NVIDIA CORPORATION | 6.73% | 12.63% |
| APPLE INC. | 6.03% | 11.67% |
| MICROSOFT CORPORATION | 4.00% | 7.62% |
| AMAZON.COM, INC. | 3.33% | 4.47% |
| ALPHABET INC. | 3.00% | 5.76% |
| BROADCOM INC. | 2.54% | 4.29% |
| ALPHABET INC. | 2.42% | 4.54% |
| META PLATFORMS, INC. | 1.79% | 3.41% |
| TESLA, INC. | 1.77% | 3.27% |
| ELI LILLY AND COMPANY | 1.38% | 2.81% |
| ADVANCED MICRO DEVICES, INC. | 1.36% | 2.62% |
| APPLIED MATERIALS, INC. | 0.83% | 1.60% |
| Only in IWB | Only in VUG |
|---|---|
| MICRON TECHNOLOGY, INC. 1.88% | Seagate Technology Holdings PLC 0.61% |
| BERKSHIRE HATHAWAY INC. 1.34% | Waste Connections Inc 0.14% |
| JPMORGAN CHASE & CO. 1.26% | Cerebras Systems Inc 0.04% |
| JOHNSON & JOHNSON 0.88% | Symbotic Inc 0.02% |
| EXXON MOBIL CORPORATION 0.82% | Venture Global Inc 0.02% |
| WALMART INC. 0.72% | ABIOMED Inc 0.00% |
| CATERPILLAR INC. 0.70% | |
| CISCO SYSTEMS, INC. 0.67% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.
| IWB iShares Russell 1000 ETF | VUG Vanguard Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 1000 | US growth |
| Total return, 1 year | +16.7% | +12.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.8 pts | −4.6 pts |
| Expense ratio | 0.15% | 0.03% |
| Already in the S&P 500 | 91.9% | 97.4% |
| Holdings | 1024 | 147 |
IWB in plain words
IWB is an index equity fund tracking the Russell 1000. Over the year to Sep 11, 2026 it returned +16.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year. By its holdings filed for Jun 30, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1024 positions, with the top ten at 33.5%.
VUG in plain words
VUG is an index equity fund tracking the US growth. Over the year to Sep 11, 2026 it returned +12.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 97% of the fund by weight is stocks the S&P 500 also holds, across 147 positions, with the top ten at 60.5%.
Questions people ask
- Which returned more over the last year, IWB or VUG?
- In the year to Sep 12, 2026, with distributions reinvested, IWB returned +16.7% and VUG returned +12.9%, so IWB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWB or VUG?
- IWB charges 0.15% a year and VUG charges 0.03%, so VUG is cheaper. Fees come from each fund's prospectus.
- How much do IWB and VUG overlap with the S&P 500?
- By their latest filed holdings, 92% of IWB and 97% of VUG by weight is stocks the S&P 500 already holds. Between the two funds, 54% of their books are the same securities at the same weight.
Other comparisons
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IWB against VUG, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWB-VUG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources